Issn Print: 0195-9131
Publication Date: 2001/05/01
THE EFFECTS OF 12 WEEKS OF CARDIORESISTANCE, RESISTANCE, OR CARDIOVASCULAR TRAINING ON BLOOD LIPIDS
J O. Cox; J A. Flohr; M J. Saunders; M K. Todd
+ Author Information
Author Information: James Madison University, Harrisonburg, VA
Excerpt
The majority of adults in the United States cite a lack of time as the number one reason they are unable to exercise on a regular basis. Cardioresistance training (CR) incorporates both cardiovascular (CV) and resistance (R) training into a single workout, potentially decreasing total exercise time. If CR can be demonstrated to elicit similar health benefits as those derived from traditional CV and R training, it may prove to be an optimal form of training for those with limited time to exercise. The purpose of this study was to determine if changes in blood lipids were similar following 12 weeks of CR, R, or CV training. Twenty-seven subjects (46 + 10 years) were randomly selected into one of the three training groups. Each of the groups trained for 40 minutes per day, three days per week. No attempt was made to control the subject's diet during the study. Blood samples were obtained follwing an overnight fast before and after 12 weeks of training and analyzed for total cholesterol (CHOL), HDL cholesterol (HDL) and triglyceride (TRIG). The lipoprotein fractions, LDL and VLDL cholesterol were calculated from CHOL, TRIG and HDL. Training elicited no significant changes in CHOL, TRIG or VLDL for all groups. A Tukey's post hoc test indicated significant (p < 0.05) increases in HDL in the R (43.5 ± 21.1, 61.8 ± 22.7 mg/dL) and CV (42.5 ± 12.0, 57.6 ± 17.6 mg/dL) groups and significant decreases in LDLC in the R (126.9 ± 60.7, 90.8 ± 41.5 mg/dL) and CV (124.6 ± 40.4, 90.7 ± 18.4 mg/dL) groups. These results suggested that 12 weeks of training, regardless of training group was insufficient in producing changes in CHOL, TRIG or VLDL. However, R and CV groups did demonstrate positive changes in HDL, and LDL. Regular aerobic exercise appears to be a potent stimulus for improving the blood lipid profile. However, there is limited evidence that resistance training produces comparable changes in blood lipids. It would appear that the dose of CR training was insufficient in producing favorable changes in blood lipids.
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